Figure 24-2: Organization of the DNA inversion system of P1. The two cix recombination sites flanking the invertible C-segment, and the enhancer sequence sis, located within the cin gene, are shown as black boxes. Two promoters, Ps, expressing the tailfiber operon and Pcin, expressing the cin gene are shown as filled triangles. Genes are shown as open boxes with arrowheads indicating the direction of transcription. In the depicted orientation the three tailfiber proteins R, S and U are produced, while a single inversion event would fuse Sc to Sv', resulting in the expression of the three proteins R, S' and U'. (for better image quality, click here for tif image, which may be quite large; may also require screen refreshing plus special software to view; or view larger tif in separate window)

Figure 24-1, Figure 24-2, Figure 24-3, Figure 24-4, Figure 24-5, Figure 24-6

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